limewater

Thân thiện

A scientist adds a drop of limewater to a test tube.

Definition

1. Noun:
   • A solution of calcium hydroxide in water used as an antacid: Limewater is a clear, saturated aqueous solution of calcium hydroxide, traditionally used medicinally to neutralize excess stomach acid.

Usage Examples

• Noun:
  • The old remedy involved drinking a small amount of limewater to soothe indigestion.
  • In the laboratory, we tested for carbon dioxide by bubbling the gas through limewater, which turned cloudy.

Advanced Usage

• Chemical Indicator: In chemistry, limewater is a common reagent used to detect the presence of carbon dioxide gas, as it forms a white precipitate of calcium carbonate.
  • The classic test for CO₂ is to pass the gas into limewater and observe the milky suspension.

Variants and Related Words

• Slaked lime (noun): Another name for calcium hydroxide, the solid compound dissolved to make limewater.
• Calcium hydroxide (noun): The chemical compound (Ca(OH)₂) that is the solute in limewater.

Synonyms

• Calcium hydroxide solution: A more technical synonym describing its chemical composition.

Học thuật

Noun

1. solution of calcium hydroxide in water used as an antacid